New York's Number 7 Subway Line Extension opens24 September 2015
USA - The No. 7 Subway Line Extension has opened in New York. The project has extended the metro line into the vicinity of 25th Street and 11th Avenue.
This project included twin running tunnels with five cross passages, a 34th Street station cavern, three shafts, and numerous ancillary structures.
The 7 Line Extension was built by a JV of Skanska/ Shea/Schiavone known as S3. Gall Zeidler was involved with construction management as well as assessing the impact of the underground structures. The project cost approximately USD 2bn.